dork

from WordNet (r) 3.0 (2006)

dork
    n 1: a dull stupid fatuous person [syn: {jerk}, {dork}]

from The Collaborative International Dictionary of English v.0.48

dork \dork\ (d[^o]rk), n.
   1. a person who is stupid, socially inept, or ridiculous; --
      always used disparagingly. [slang.]

   Syn: nerd; jerk. [PJC]

   2. the penis. [vulgar slang]
      [PJC]